Aerobic stability (AS) temperature exerts a highly significant effect on corn silage quality, with practical consequences for feed management under warming climate conditions. A complete 3x2x2 factorial experiment tested three treatments (untreated control, Formasil(R) Maize Propio containing L. buchneri and propionic acid, homofermentative L. plantarum inoculant) at two fermentation temperatures (20 oC, 30 oC) followed by aerobic exposure at 20 oC and 30 oC. Twenty-three samples were analyzed after 40-day fermentation. AS at 20 oC preserved 12.7% higher NEL (6.85 vs. 6.08 MJ/kg DM; p